}
}
-/*
- * We used to try to deal with 64-bit BARs here, but don't any more.
- * There are many parts of this driver which would need to be modified
- * to handle a 64-bit base address, including scripts. I'm uncomfortable
- * with making those changes when I have no way of testing it, so I'm
- * just going to disable it.
- *
- * Note that some machines (eg HP rx8620 and Superdome) have bus addresses
- * below 4GB and physical addresses above 4GB. These will continue to work.
- */
-static int __devinit
-pci_get_base_address(struct pci_dev *pdev, int index, unsigned long *basep)
-{
- u32 tmp;
- unsigned long base;
-#define PCI_BAR_OFFSET(index) (PCI_BASE_ADDRESS_0 + (index<<2))
-
- pci_read_config_dword(pdev, PCI_BAR_OFFSET(index++), &tmp);
- base = tmp;
- if ((tmp & 0x7) == PCI_BASE_ADDRESS_MEM_TYPE_64) {
- pci_read_config_dword(pdev, PCI_BAR_OFFSET(index++), &tmp);
- if (tmp > 0)
- dev_err(&pdev->dev,
- "BAR %d is 64-bit, disabling\n", index - 1);
- base = 0;
- }
-
- if ((base & PCI_BASE_ADDRESS_SPACE) == PCI_BASE_ADDRESS_SPACE_IO) {
- base &= PCI_BASE_ADDRESS_IO_MASK;
- } else {
- base &= PCI_BASE_ADDRESS_MEM_MASK;
- }
-
- *basep = base;
- return index;
-#undef PCI_BAR_OFFSET
-}
-
static struct scsi_transport_template *sym2_transport_template = NULL;
-/*
- * Used by the eh thread to wait for command completion.
- * It is allocated on the eh thread stack.
- */
-struct sym_eh_wait {
- struct completion done;
- struct timer_list timer;
- void (*old_done)(struct scsi_cmnd *);
- int to_do;
- int timed_out;
-};
-
/*
* Driver private area in the SCSI command structure.
*/
struct sym_ucmd { /* Override the SCSI pointer structure */
- dma_addr_t data_mapping;
- u_char data_mapped;
- struct sym_eh_wait *eh_wait;
+ dma_addr_t data_mapping;
+ unsigned char data_mapped;
+ unsigned char to_do; /* For error handling */
+ void (*old_done)(struct scsi_cmnd *); /* For error handling */
+ struct completion *eh_done; /* For error handling */
};
#define SYM_UCMD_PTR(cmd) ((struct sym_ucmd *)(&(cmd)->SCp))
{
struct sym_tblmove *data = &cp->phys.data[SYM_CONF_MAX_SG-1];
int segment;
+ unsigned int len = cmd->request_bufflen;
- cp->data_len = cmd->request_bufflen;
-
- if (cmd->request_bufflen) {
+ if (len) {
dma_addr_t baddr = map_scsi_single_data(np, cmd);
if (baddr) {
- sym_build_sge(np, data, baddr, cmd->request_bufflen);
+ if (len & 1) {
+ struct sym_tcb *tp = &np->target[cp->target];
+ if (tp->head.wval & EWS) {
+ len++;
+ cp->odd_byte_adjustment++;
+ }
+ }
+ cp->data_len = len;
+ sym_build_sge(np, data, baddr, len);
segment = 1;
} else {
segment = -2;
segment = sym_scatter_no_sglist(np, cp, cmd);
else if ((use_sg = map_scsi_sg_data(np, cmd)) > 0) {
struct scatterlist *scatter = (struct scatterlist *)cmd->buffer;
+ struct sym_tcb *tp = &np->target[cp->target];
struct sym_tblmove *data;
if (use_sg > SYM_CONF_MAX_SG) {
dma_addr_t baddr = sg_dma_address(&scatter[segment]);
unsigned int len = sg_dma_len(&scatter[segment]);
+ if ((len & 1) && (tp->head.wval & EWS)) {
+ len++;
+ cp->odd_byte_adjustment++;
+ }
+
sym_build_sge(np, &data[segment], baddr, len);
cp->data_len += len;
}
* Minimal checkings, so that we will not
* go outside our tables.
*/
- if (sdev->id == np->myaddr ||
- sdev->id >= SYM_CONF_MAX_TARGET ||
- sdev->lun >= SYM_CONF_MAX_LUN) {
- sym_xpt_done2(np, cmd, CAM_DEV_NOT_THERE);
+ if (sdev->id == np->myaddr) {
+ sym_xpt_done2(np, cmd, DID_NO_CONNECT);
return 0;
}
*/
tp = &np->target[sdev->id];
- /*
- * Complete the 1st INQUIRY command with error
- * condition if the device is flagged NOSCAN
- * at BOOT in the NVRAM. This may speed up
- * the boot and maintain coherency with BIOS
- * device numbering. Clearing the flag allows
- * user to rescan skipped devices later.
- * We also return error for devices not flagged
- * for SCAN LUNS in the NVRAM since some mono-lun
- * devices behave badly when asked for some non
- * zero LUN. Btw, this is an absolute hack.:-)
- */
- if (cmd->cmnd[0] == 0x12 || cmd->cmnd[0] == 0x0) {
- if ((tp->usrflags & SYM_SCAN_BOOT_DISABLED) ||
- ((tp->usrflags & SYM_SCAN_LUNS_DISABLED) &&
- sdev->lun != 0)) {
- tp->usrflags &= ~SYM_SCAN_BOOT_DISABLED;
- sym_xpt_done2(np, cmd, CAM_DEV_NOT_THERE);
- return 0;
- }
- }
-
/*
* Select tagged/untagged.
*/
*/
static inline int sym_setup_cdb(struct sym_hcb *np, struct scsi_cmnd *cmd, struct sym_ccb *cp)
{
- u32 cmd_ba;
- int cmd_len;
-
- /*
- * CDB is 16 bytes max.
- */
- if (cmd->cmd_len > sizeof(cp->cdb_buf)) {
- sym_set_cam_status(cp->cmd, CAM_REQ_INVALID);
- return -1;
- }
-
memcpy(cp->cdb_buf, cmd->cmnd, cmd->cmd_len);
- cmd_ba = CCB_BA (cp, cdb_buf[0]);
- cmd_len = cmd->cmd_len;
- cp->phys.cmd.addr = cpu_to_scr(cmd_ba);
- cp->phys.cmd.size = cpu_to_scr(cmd_len);
+ cp->phys.cmd.addr = CCB_BA(cp, cdb_buf[0]);
+ cp->phys.cmd.size = cpu_to_scr(cmd->cmd_len);
return 0;
}
*/
int sym_setup_data_and_start(struct sym_hcb *np, struct scsi_cmnd *cmd, struct sym_ccb *cp)
{
+ u32 lastp, goalp;
int dir;
- struct sym_tcb *tp = &np->target[cp->target];
- struct sym_lcb *lp = sym_lp(tp, cp->lun);
/*
* Build the CDB.
if (dir != DMA_NONE) {
cp->segments = sym_scatter(np, cp, cmd);
if (cp->segments < 0) {
- if (cp->segments == -2)
- sym_set_cam_status(cmd, CAM_RESRC_UNAVAIL);
- else
- sym_set_cam_status(cmd, CAM_REQ_TOO_BIG);
+ sym_set_cam_status(cmd, DID_ERROR);
goto out_abort;
}
+
+ /*
+ * No segments means no data.
+ */
+ if (!cp->segments)
+ dir = DMA_NONE;
} else {
cp->data_len = 0;
cp->segments = 0;
}
/*
- * Set data pointers.
+ * Set the data pointer.
*/
- sym_setup_data_pointers(np, cp, dir);
+ switch (dir) {
+ case DMA_BIDIRECTIONAL:
+ printk("%s: got DMA_BIDIRECTIONAL command", sym_name(np));
+ sym_set_cam_status(cmd, DID_ERROR);
+ goto out_abort;
+ case DMA_TO_DEVICE:
+ goalp = SCRIPTA_BA(np, data_out2) + 8;
+ lastp = goalp - 8 - (cp->segments * (2*4));
+ break;
+ case DMA_FROM_DEVICE:
+ cp->host_flags |= HF_DATA_IN;
+ goalp = SCRIPTA_BA(np, data_in2) + 8;
+ lastp = goalp - 8 - (cp->segments * (2*4));
+ break;
+ case DMA_NONE:
+ default:
+ lastp = goalp = SCRIPTB_BA(np, no_data);
+ break;
+ }
+
+ /*
+ * Set all pointers values needed by SCRIPTS.
+ */
+ cp->phys.head.lastp = cpu_to_scr(lastp);
+ cp->phys.head.savep = cpu_to_scr(lastp);
+ cp->startp = cp->phys.head.savep;
+ cp->goalp = cpu_to_scr(goalp);
/*
* When `#ifed 1', the code below makes the driver
/*
* activate this job.
*/
- if (lp)
- sym_start_next_ccbs(np, lp, 2);
- else
- sym_put_start_queue(np, cp);
+ sym_put_start_queue(np, cp);
return 0;
out_abort:
* What we will do regarding the involved SCSI command.
*/
#define SYM_EH_DO_IGNORE 0
-#define SYM_EH_DO_COMPLETE 1
#define SYM_EH_DO_WAIT 2
/*
- * Our general completion handler.
+ * scsi_done() alias when error recovery is in progress.
*/
-static void __sym_eh_done(struct scsi_cmnd *cmd, int timed_out)
+static void sym_eh_done(struct scsi_cmnd *cmd)
{
- struct sym_eh_wait *ep = SYM_UCMD_PTR(cmd)->eh_wait;
- if (!ep)
- return;
-
- /* Try to avoid a race here (not 100% safe) */
- if (!timed_out) {
- ep->timed_out = 0;
- if (ep->to_do == SYM_EH_DO_WAIT && !del_timer(&ep->timer))
- return;
- }
+ struct sym_ucmd *ucmd = SYM_UCMD_PTR(cmd);
+ BUILD_BUG_ON(sizeof(struct scsi_pointer) < sizeof(struct sym_ucmd));
- /* Revert everything */
- SYM_UCMD_PTR(cmd)->eh_wait = NULL;
- cmd->scsi_done = ep->old_done;
+ cmd->scsi_done = ucmd->old_done;
- /* Wake up the eh thread if it wants to sleep */
- if (ep->to_do == SYM_EH_DO_WAIT)
- complete(&ep->done);
+ if (ucmd->to_do == SYM_EH_DO_WAIT)
+ complete(ucmd->eh_done);
}
-/*
- * scsi_done() alias when error recovery is in progress.
- */
-static void sym_eh_done(struct scsi_cmnd *cmd) { __sym_eh_done(cmd, 0); }
-
-/*
- * Some timeout handler to avoid waiting too long.
- */
-static void sym_eh_timeout(u_long p) { __sym_eh_done((struct scsi_cmnd *)p, 1); }
-
/*
* Generic method for our eh processing.
* The 'op' argument tells what we have to do.
static int sym_eh_handler(int op, char *opname, struct scsi_cmnd *cmd)
{
struct sym_hcb *np = SYM_SOFTC_PTR(cmd);
+ struct sym_ucmd *ucmd = SYM_UCMD_PTR(cmd);
+ struct Scsi_Host *host = cmd->device->host;
SYM_QUEHEAD *qp;
int to_do = SYM_EH_DO_IGNORE;
int sts = -1;
- struct sym_eh_wait eh, *ep = &eh;
+ struct completion eh_done;
dev_warn(&cmd->device->sdev_gendev, "%s operation started.\n", opname);
+ spin_lock_irq(host->host_lock);
/* This one is queued in some place -> to wait for completion */
FOR_EACH_QUEUED_ELEMENT(&np->busy_ccbq, qp) {
struct sym_ccb *cp = sym_que_entry(qp, struct sym_ccb, link_ccbq);
if (cp->cmd == cmd) {
to_do = SYM_EH_DO_WAIT;
- goto prepare;
+ break;
}
}
-prepare:
- /* Prepare stuff to either ignore, complete or wait for completion */
- switch(to_do) {
- default:
- case SYM_EH_DO_IGNORE:
- break;
- case SYM_EH_DO_WAIT:
- init_completion(&ep->done);
- /* fall through */
- case SYM_EH_DO_COMPLETE:
- ep->old_done = cmd->scsi_done;
+ if (to_do == SYM_EH_DO_WAIT) {
+ init_completion(&eh_done);
+ ucmd->old_done = cmd->scsi_done;
+ ucmd->eh_done = &eh_done;
+ wmb();
cmd->scsi_done = sym_eh_done;
- SYM_UCMD_PTR(cmd)->eh_wait = ep;
}
/* Try to proceed the operation we have been asked for */
/* On error, restore everything and cross fingers :) */
if (sts) {
- SYM_UCMD_PTR(cmd)->eh_wait = NULL;
- cmd->scsi_done = ep->old_done;
+ cmd->scsi_done = ucmd->old_done;
to_do = SYM_EH_DO_IGNORE;
}
- ep->to_do = to_do;
- /* Complete the command with locks held as required by the driver */
- if (to_do == SYM_EH_DO_COMPLETE)
- sym_xpt_done2(np, cmd, CAM_REQ_ABORTED);
+ ucmd->to_do = to_do;
+ spin_unlock_irq(host->host_lock);
- /* Wait for completion with locks released, as required by kernel */
if (to_do == SYM_EH_DO_WAIT) {
- init_timer(&ep->timer);
- ep->timer.expires = jiffies + (5*HZ);
- ep->timer.function = sym_eh_timeout;
- ep->timer.data = (u_long)cmd;
- ep->timed_out = 1; /* Be pessimistic for once :) */
- add_timer(&ep->timer);
- spin_unlock_irq(np->s.host->host_lock);
- wait_for_completion(&ep->done);
- spin_lock_irq(np->s.host->host_lock);
- if (ep->timed_out)
+ if (!wait_for_completion_timeout(&eh_done, 5*HZ)) {
+ ucmd->to_do = SYM_EH_DO_IGNORE;
+ wmb();
sts = -2;
+ }
}
dev_warn(&cmd->device->sdev_gendev, "%s operation %s.\n", opname,
sts==0 ? "complete" :sts==-2 ? "timed-out" : "failed");
if (reqtags > lp->s.scdev_depth)
reqtags = lp->s.scdev_depth;
- lp->started_limit = reqtags ? reqtags : 2;
- lp->started_max = 1;
lp->s.reqtags = reqtags;
if (reqtags != oldtags) {
- dev_info(&tp->sdev->sdev_target->dev,
+ dev_info(&tp->starget->dev,
"tagged command queuing %s, command queue depth %d.\n",
- lp->s.reqtags ? "enabled" : "disabled",
- lp->started_limit);
+ lp->s.reqtags ? "enabled" : "disabled", reqtags);
}
}
return DEF_DEPTH;
}
-static int sym53c8xx_slave_alloc(struct scsi_device *device)
+static int sym53c8xx_slave_alloc(struct scsi_device *sdev)
{
- struct sym_hcb *np = sym_get_hcb(device->host);
- struct sym_tcb *tp = &np->target[device->id];
- if (!tp->sdev)
- tp->sdev = device;
+ struct sym_hcb *np = sym_get_hcb(sdev->host);
+ struct sym_tcb *tp = &np->target[sdev->id];
+ struct sym_lcb *lp;
- return 0;
-}
+ if (sdev->id >= SYM_CONF_MAX_TARGET || sdev->lun >= SYM_CONF_MAX_LUN)
+ return -ENXIO;
-static void sym53c8xx_slave_destroy(struct scsi_device *device)
-{
- struct sym_hcb *np = sym_get_hcb(device->host);
- struct sym_tcb *tp = &np->target[device->id];
- if (tp->sdev == device)
- tp->sdev = NULL;
+ tp->starget = sdev->sdev_target;
+ /*
+ * Fail the device init if the device is flagged NOSCAN at BOOT in
+ * the NVRAM. This may speed up boot and maintain coherency with
+ * BIOS device numbering. Clearing the flag allows the user to
+ * rescan skipped devices later. We also return an error for
+ * devices not flagged for SCAN LUNS in the NVRAM since some single
+ * lun devices behave badly when asked for a non zero LUN.
+ */
+
+ if (tp->usrflags & SYM_SCAN_BOOT_DISABLED) {
+ tp->usrflags &= ~SYM_SCAN_BOOT_DISABLED;
+ starget_printk(KERN_INFO, tp->starget,
+ "Scan at boot disabled in NVRAM\n");
+ return -ENXIO;
+ }
+
+ if (tp->usrflags & SYM_SCAN_LUNS_DISABLED) {
+ if (sdev->lun != 0)
+ return -ENXIO;
+ starget_printk(KERN_INFO, tp->starget,
+ "Multiple LUNs disabled in NVRAM\n");
+ }
+
+ lp = sym_alloc_lcb(np, sdev->id, sdev->lun);
+ if (!lp)
+ return -ENOMEM;
+
+ spi_min_period(tp->starget) = tp->usr_period;
+ spi_max_width(tp->starget) = tp->usr_width;
+
+ return 0;
}
/*
* Linux entry point for device queue sizing.
*/
-static int sym53c8xx_slave_configure(struct scsi_device *device)
+static int sym53c8xx_slave_configure(struct scsi_device *sdev)
{
- struct sym_hcb *np = sym_get_hcb(device->host);
- struct sym_tcb *tp = &np->target[device->id];
- struct sym_lcb *lp;
+ struct sym_hcb *np = sym_get_hcb(sdev->host);
+ struct sym_tcb *tp = &np->target[sdev->id];
+ struct sym_lcb *lp = sym_lp(tp, sdev->lun);
int reqtags, depth_to_use;
- /*
- * Allocate the LCB if not yet.
- * If it fail, we may well be in the sh*t. :)
- */
- lp = sym_alloc_lcb(np, device->id, device->lun);
- if (!lp)
- return -ENOMEM;
-
/*
* Get user flags.
*/
* Use at least 2.
* Donnot use more than our maximum.
*/
- reqtags = device_queue_depth(np, device->id, device->lun);
+ reqtags = device_queue_depth(np, sdev->id, sdev->lun);
if (reqtags > tp->usrtags)
reqtags = tp->usrtags;
- if (!device->tagged_supported)
+ if (!sdev->tagged_supported)
reqtags = 0;
#if 1 /* Avoid to locally queue commands for no good reasons */
if (reqtags > SYM_CONF_MAX_TAG)
#else
depth_to_use = (reqtags ? SYM_CONF_MAX_TAG : 2);
#endif
- scsi_adjust_queue_depth(device,
- (device->tagged_supported ?
+ scsi_adjust_queue_depth(sdev,
+ (sdev->tagged_supported ?
MSG_SIMPLE_TAG : 0),
depth_to_use);
lp->s.scdev_depth = depth_to_use;
- sym_tune_dev_queuing(tp, device->lun, reqtags);
+ sym_tune_dev_queuing(tp, sdev->lun, reqtags);
- if (!spi_initial_dv(device->sdev_target))
- spi_dv_device(device);
+ if (!spi_initial_dv(sdev->sdev_target))
+ spi_dv_device(sdev);
return 0;
}
+static void sym53c8xx_slave_destroy(struct scsi_device *sdev)
+{
+ struct sym_hcb *np = sym_get_hcb(sdev->host);
+ struct sym_lcb *lp = sym_lp(&np->target[sdev->id], sdev->lun);
+
+ if (lp->itlq_tbl)
+ sym_mfree_dma(lp->itlq_tbl, SYM_CONF_MAX_TASK * 4, "ITLQ_TBL");
+ kfree(lp->cb_tags);
+ sym_mfree_dma(lp, sizeof(*lp), "LCB");
+}
+
/*
* Linux entry point for info() function
*/
{
#if SYM_CONF_DMA_ADDRESSING_MODE > 0
#if SYM_CONF_DMA_ADDRESSING_MODE == 1
-#define DMA_DAC_MASK 0x000000ffffffffffULL /* 40-bit */
+#define DMA_DAC_MASK DMA_40BIT_MASK
#elif SYM_CONF_DMA_ADDRESSING_MODE == 2
#define DMA_DAC_MASK DMA_64BIT_MASK
#endif
static void __devinit
sym_init_device(struct pci_dev *pdev, struct sym_device *device)
{
- int i;
+ int i = 2;
+ struct pci_bus_region bus_addr;
device->host_id = SYM_SETUP_HOST_ID;
device->pdev = pdev;
- i = pci_get_base_address(pdev, 1, &device->mmio_base);
- pci_get_base_address(pdev, i, &device->ram_base);
+ pcibios_resource_to_bus(pdev, &bus_addr, &pdev->resource[1]);
+ device->mmio_base = bus_addr.start;
+
+ /*
+ * If the BAR is 64-bit, resource 2 will be occupied by the
+ * upper 32 bits
+ */
+ if (!pdev->resource[i].flags)
+ i++;
+ pcibios_resource_to_bus(pdev, &bus_addr, &pdev->resource[i]);
+ device->ram_base = bus_addr.start;
-#ifndef CONFIG_SCSI_SYM53C8XX_IOMAPPED
+#ifdef CONFIG_SCSI_SYM53C8XX_MMIO
if (device->mmio_base)
device->s.ioaddr = pci_iomap(pdev, 1,
pci_resource_len(pdev, 1));
*/
printk("%s: resetting chip\n", sym_name(np));
OUTB(np, nc_istat, SRST);
+ INB(np, nc_mbox1);
udelay(10);
OUTB(np, nc_istat, 0);
.eh_bus_reset_handler = sym53c8xx_eh_bus_reset_handler,
.eh_host_reset_handler = sym53c8xx_eh_host_reset_handler,
.this_id = 7,
- .use_clustering = DISABLE_CLUSTERING,
+ .use_clustering = ENABLE_CLUSTERING,
+ .max_sectors = 0xFFFF,
#ifdef SYM_LINUX_PROC_INFO_SUPPORT
.proc_info = sym53c8xx_proc_info,
.proc_name = NAME53C8XX,
tp->tgoal.check_nego = 1;
}
+#if 0
static void sym2_set_iu(struct scsi_target *starget, int iu)
{
struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
tp->tgoal.qas = 0;
tp->tgoal.check_nego = 1;
}
-
+#endif
static struct spi_function_template sym2_transport_functions = {
.set_offset = sym2_set_offset,
.show_width = 1,
.set_dt = sym2_set_dt,
.show_dt = 1,
+#if 0
.set_iu = sym2_set_iu,
.show_iu = 1,
.set_qas = sym2_set_qas,
.show_qas = 1,
+#endif
.get_signalling = sym2_get_signalling,
};
git://git.onelab.eu / linux-2.6.git / blobdiff